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Phantom API — Sei Network RPC Endpoint
x402
Phantom API — Sei Network RPC Endpoint is a paid API for AI agents from phantom-api-omega.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Provides JSON-RPC access to the Sei blockchain network, enabling queries and transactions on Sei via pay-per-call Web3 infrastructure.
Price / call$0.01
Success—
StatusUnknown
How this service works
Lightning-fast access to blockchain data, smart contract insights, and Web3 infrastructure across 57+ networks. Pay-per-call via x402.
Output
Returns standard JSON-RPC response objects containing blockchain data such as block information, account balances, transaction receipts, smart contract return values, or network status — matching standard Ethereum/Cosmos-compatible RPC response formats for the Sei network.
Example use cases
Check Sei account balance
“Look up the current token balance for Sei address sei1qg5ega6dykkxc307y25pecuufrjkxkag6sqr6p and tell me what it holds.”
Fetch latest Sei block data
“What is the latest block on the Sei network? Give me the block number, timestamp, and transaction count.”
Query Sei smart contract state
“Call the smart contract at address sei1xyz on Sei mainnet using the 'getReserves' method with no params and show me the result.”
Technical details
Endpoint
POSThttps://phantom-api-omega.vercel.app/api/sei/rpcWhen to prefer
Choose this endpoint when you need fast, pay-per-call RPC access to the Sei blockchain without managing your own node or committing to a subscription. Ideal for agents making occasional or bursty Sei network queries, reading on-chain state, or broadcasting transactions to Sei with no infrastructure overhead.
Side effects
- Invalid JSON-RPC method name returns method-not-found error
- Malformed params array causes invalid params error
- Network congestion or node unavailability causes timeout
- Insufficient x402 payment causes 402 Payment Required response
- Querying non-existent address or block returns null result
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| method | string | |
| params | array |
Tags
x402
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